Clematis plant named ‘Zo09113’

ABSTRACT

A new cultivar of hybrid  Clematis , ‘Zo09113’, that is characterized by its almost upright facing flowers, its flowers with bicolored tepals with white centers and purple margins that retain their color with very little or no fading, its sterility, and its cold hardiness to at least U.S.D.A. Zone 5.

Botanical classification: Clematis hybrid.

Variety denomination: ‘Zo09113’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Clematisof hybrid origin (Viticella Group) and will be referred to hereafter byits cultivar name ‘Zo09113’. ‘Zo09113’ is grown as an herbaceous climberfor landscape use and as a flowering potted plant for the terrace.

‘Zo09113’ is derived from an ongoing breeding program by the Inventor inhis nursery in Boskoop, The Netherlands. The goal of the selection wasto select a hardy climber with uniquely colored flowers, that is easy togrow and propagate and that could be grown for different purposes.‘Zo09113’ was selected in 2009 and arose from a controlled cross made in2006 between unnamed and unpatented plants from his breeding program;the female parent designated as No. 19990039 and the male parentdesignated as No. 20050163.

Asexual propagation of the new cultivar was first accomplished byinternodial stem cuttings under the direction of the Inventor inBoskoop, The Netherlands in 2010. Asexual propagation by internodialstem cutting has determined that the characteristics of the new cultivarare stable and are reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and represent thecharacteristics of the new cultivar as grown outdoors and observed forfour years in Boskoop, The Netherlands. These attributes in combinationdistinguish Clematis ‘Zo09113’ as a unique cultivar of Clematis.

-   -   1. ‘Zo09113’ exhibits almost upright facing flowers.    -   2. ‘Zo09113’ exhibits bicolored tepals with white centers and        purple margins.    -   3. ‘Zo09113’ exhibits flowers that retain their color with very        little or no fading.    -   4. ‘Zo09113’ is sterile and no seed is produced.    -   5. ‘Zo09113’ is cold hardy to at least U.S.D.A. Zone 5.

‘Zo09113’ differs from its female parent in having flowers that arealmost upright and nodding flower buds while the female parent hasupright flowers and upright flower buds. ‘Zo09113’ differs from its maleparent in having larger flowers with mostly 6 tepals (sometimes 4-5) andbicolored while the male parent has smaller flowers with 4-5 tepals andare one color.

‘Zo09113’ can be most closely compared to the cultivars Clematis‘Minuet’ (not patented) and Clematis ‘Walenburg’ (not patented),differences are described in TABLE 1

TABLE 1 Clematis cultivar Characteristic Description ‘Zo09113’ ‘Minuet’Flower size 4-5 cm 6-9 cm ‘Minuet’ Tepal number 4 6 (4-5 more rarely)‘Minuet’ Flower shape Campanulate Almost spreading ‘Minuet’ Floweraspect Nodding More or less upright ‘Walenburg’ Flower size 5-6 cm 6-9cm ‘Walenburg’ Tepal number 4 6 (4-5 more rarely) ‘Walenburg’ Flowershape Campanulate Almost spreading ‘Walenburg’ Flower aspect NoddingMore or less upright

BRIEF DESCRIPTION OF THE DRAWING

The accompanying colored photographs illustrate the overall appearanceand distinct characteristics of the new Clematis. The photographs weretaken of a three year-old plant of ‘Zo09113’ as grown in a one-galloncontainer in Boskoop, The Netherlands.

The photograph in FIG. 1 shows the flowers.

The photograph in FIG. 2 shows the habitus and leaves.

The photograph in FIG. 3 shows the inside of the flower with a close upof the stamens and pistils.

The photograph in FIG. 4 shows the flower bud.

The colors of the photographs are as close as possible with the digitalphotography techniques available, the color values cited in the detailedbotanical description accurately describe the colors of the newClematis.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed description of three year-old plants of‘Zo09113’ as grown outdoors in full sun in one-gallon containers at anursery in Boskoop, The Netherlands. The phenotype of the new cultivarmay vary with variations in environmental, climatic and culturalconditions, as the cultivar has not been tested under all possibleenvironmental conditions. The color determination is in accordance withThe 2001 R.H.S. Color Chart, London, England, except where general colorterms of ordinary dictionary significance are used.

-   General description:    -   -   Botanical classification.—Clematis ‘Zo09113’ (classified in            the Viticella Group).        -   Blooming period.—From late spring to late summer.        -   Plant habit.—Herbaceous climber.        -   Height and spread.—Three year-old plant is about 20 cm in            width at the base and 3 m in height when pruned hard in late            winter.        -   Cold hardiness.—At least to U.S.D.A. Zone 5.        -   Culture.—Moist but well-drained soils in full sun with the            roots shaded.        -   Diseases and pests.—Susceptibility to powdery mildew caused            by Erysiphe polygoni is unknown, no pest problems have been            observed.        -   Root description.—Fleshy.-   Growth and propagation:    -   -   Propagation.—Internodial soft wood cuttings from vegetative            shoots.        -   Root initiation.—Roots develop in 5 weeks in summer under            greenhouse conditions.        -   Time required for root development.—75 to 90 days to develop            a 7-cm container from a 5-cm cutting.        -   Growth rate.—Vigorous and very free flowering in the            landscape.-   Stem description:    -   -   Shape.—Round and 6-ribbed.        -   Stem color.—173A.        -   Stem size.—Up to 3 m in length (including peduncle and            terminal pedicel), 2 to 4 mm in diameter.        -   Stem surface.—Sparsely covered with hairs.        -   Internode length.—Up to 14 cm in length.        -   Branching.—Branching from the base.-   Foliage description:    -   -   Leaf arrangement.—Opposite.        -   Leaf division.—Ternate or pinnate.        -   Leaf size.—Up to 15 cm in length and 12 cm in width.        -   Leaf attachment.—Petiolate.        -   Leaf shape.—Elliptic.        -   Leaf base.—Base obtuse to subcordate.        -   Leaf apex.—Acuminate.        -   Leaf fragrance.—Clearly a “sharp” fragrance when crushed.        -   Leaf venation.—Upper surface just slightly reticulate, lower            surface just reticulate, color similar to leaf color on            upper and lower surface.        -   Leaf margin.—Entire.        -   Leaf surface.—Upper surface; glabrous but sometimes a few            short hairs on the midvein towards the apex, lower surface;            glabrous.        -   Leaf color.—Upper surface; 146A sometimes flushed N79C,            lower surface; 146B.        -   Petioles.—1 to 6 cm in length, 1 mm in diameter, 146A            stained 79D in color, round but canaliculate above in shape,            surface glabrous with a few hairs.        -   Petiolules.—Sessile to 0.3 to 3.5 cm in length, surface            glabrous with a few hairs.-   Inflorescence description:    -   -   Inflorescence type.—Solitary or a 3-5 flowered dichasial            cyme.        -   Inflorescence arrangement.—Terminal and axillary on young            shoots.        -   Peduncles.—4 to 6 cm in length, N79B in color, round,            surface slightly 6 ribbed and glabrous with a few short            hairs.        -   Pedicels.—6 to 9 cm in length, N79B in color, round in            shape, surface slightly ribbed and glabrous with a few short            hairs.        -   Flower buds.—Nodding but more or less upright when opening,            lanceolate in shape, apex acuminate, base obtuse, 146A in            color flushed N82C with ribs 86B, surface sparsely hairy            with villous seams.        -   Flower fragrance.—Not fragrant.        -   Lastingness of the flowers.—Individual flowers last up to            about 6 to 8 days until the first tepal drops, followed            later by the stamens.        -   Flower quantity.—Up to 30 per stem.        -   Flower type.—Almost spreading.        -   Flower aspect.—More or less upright.        -   Flower size.—6 to 9 cm in diameter and 4 cm in depth.        -   Flower sex.—Bisexual.        -   Tepal number.—Usually 6, more rarely 4 or 5.        -   Tepal shape.—Obovate.        -   Tepal apex.—Acute.        -   Tepal base.—Cuneate.        -   Tepal margin.—Entire.        -   Tepal surface.—Inner surface; glabrous, outer surface;            glabrous with a few hairs in the middle and villous margin.        -   Tepal color.—Inner surface; 155A and flushed with N82C along            the midribs and towards the margin, margin N82B, outer            surface; center N82C with 86C ribs, surrounding the center            portion N87D becoming darker towards the margin N87A.        -   Tepal size.—Up to 4.5 cm in length and an average of 3.5 cm            in width.-   Reproductive organs:    -   -   Gynoecium.—Average of 15 to 25 pistils, up to 1.2 cm in            length, ovary 145A in color with glabrous surface, style is            N79B in color and only plumose above the ovary (otherwise            glabrous), stigma N79C in color and straight.        -   Androcoecium.—Average of 12 stamens, filaments are 0.4 to            0.7 cm in length, 0.1 cm in width and linear in shape,            surface is glabrous, color upper portion 13D and 155B at the            base; anthers are 0.4 cm in length, 0.5 mm in width, linear            in shape, and 62D in color; connective not elongated, apex            acute, surface glabrous and 60C in color.        -   Seed.—Seed is not formed, observed to be sterile.

It is claimed:
 1. A new and distinct cultivar of Clematis plant named‘Zo09113’ as herein illustrated and described.